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Currently, the electromagnetic brake has been widely used in lifting machinery , mining machinery , port equipment , construction machinery and various automation equipment , large-scale mobile device work properly guarantee . Therefore, a problem of the electromagnetic brake in the practical application is one of the problems of the study . This paper mainly start from electromagnetic system and control system , optimization and design of electromagnetic brake . First, the study of the structure of the electromagnetic brake , work process and control methods , the analysis and calculation of the magnetic circuit of the electromagnetic brake , Matlab - based simulation of the electromagnetic suction , electromagnetic brake suction characteristic curve . Then, the study of the basic theory and method of the genetic algorithm , the standard genetic algorithm has been improved , and math functions described , verification; optimized mathematical constraints electromagnetic coil parameters to the temperature rise of the value of the objective function , suction model , and the use of improved genetic algorithm to optimize the electromagnetic coil parameters reasonable coil parameters . In addition , in order to better solve multi-objective optimization design problems , proposed and designed and implemented a new multi-objective optimization algorithm - multi- target bacterial population chemotaxis algorithm ( the Multiple in Objective Bacterial Colony CHEMOTAXIS MOBCC ) through a series of tests that the effectiveness and superiority of the algorithm MOBCC ; established as the objective function of the electromagnetic coil temperature rise and electromagnetic suction multi-objective optimization mathematical model and the electromagnetic coil using MOBCC algorithm for multi-objective optimization design, ideal optimization results . Finally, on the basis of the analog circuit controller , the completion of the design, test, and test of the closed - loop control system of the electromagnetic brake digitized . Currently , the digital control type electromagnetic brake has been successfully applied to a port dumper system electromagnetic brake , to good effect.
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